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std::basic_filebuf::swap(3) C++ Standard Libary std::basic_filebuf::swap(3) NAME std::basic_filebuf::swap - std::basic_filebuf::swap Synopsis void swap( std::basic_filebuf& rhs ); (since C++11) Swaps the state and the contents of *this and rhs. Parameters rhs - another basic_filebuf Return value (none) Notes This function is called automatically when swapping std::fstream ob- jects, it is rarely necessary to call it directly. Example // Run this code #include <fstream> #include <string> #include <iostream> int main() { std::ifstream fin("test.in"); // read-only std::ofstream fout("test.out"); // write-only std::string s; getline(fin, s); std::cout << s << '\n'; // outputs the first line of test.in fin.rdbuf()->swap(*fout.rdbuf()); //swap the underlying buffers getline(fin, s); // fails: cannot read from a write-only filebuf std::cout << s << '\n'; // prints empty line } See also operator= assigns a basic_filebuf object (C++11) (public member function) std::swap(std::basic_filebuf) specializes the std::swap algorithm (C++11) (function template) swap swaps two file streams (C++11) (public member function of std::basic_fstream<CharT,Traits>) http://cppreference.com 2022.07.31 std::basic_filebuf::swap(3)
NAME | Synopsis | Parameters | Return value | Notes | Example | See also
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